Originally Posted by beninho

Some sites like AHD and PTP require you to post the video/audio encoding details of the torrents you upload. Media info is a program which analyses a file and generates a report with this information. It's a good way to quickly analyse the quality of a release, and AHD actually goes a step further and has a ranking system, with the highest quality torrents receiving 'AHD Gold' status. In my comment I was just stating that HDT doesn't have such a system in place, and hence, mods can't check on the quality of a release without downloading the actual file, which means some lower quality releases from less than reputable release groups sneak through.

I partially agree with you. It would be better to have MediaInfos. But they have trump rules. They don't allow more than one encode for each resolution. Encodes with higher quality can trump lower quality. Of course, screenshots must be provided so that the mods don't have to download the encodes to make the comparison. So it's not that hard to judge which one is better.
AHD and PTP on the other hand have so called Golden Torrents because they allow more than one encode for each resolution. The mark of Golden Torrent can tell people which one has the best quality.